3/8"unc stud with UNF end for head nut and is 4" long.
You require 5 of these high tensile short head studs and they torque to 42lb per sq ft.
For a complete kit which includes these top grade studs, see C-AHT279.
For other long head stud, see CAM150 (5.75" long).
Cooper S requires head bolt C-AHT281.
These are also used for the oil filter head to block (pre spin on filter).